Electroweak Precision Observables, New Physics and the Nature of a 126 GeV Higgs Boson
High Energy Physics - Phenomenology
2015-06-16 v2
Abstract
We perform the fit of electroweak precision observables within the Standard Model with a 126 GeV Higgs boson, compare the results with the theoretical predictions and discuss the impact of recent experimental and theoretical improvements. We introduce New Physics contributions in a model-independent way and fit for the S, T and U parameters, for the ones, for modified couplings and for a modified Higgs coupling to vector bosons. We point out that composite Higgs models are very strongly constrained. Finally, we compute the bounds on dimension-six operators relevant for the electroweak fit.
Keywords
Cite
@article{arxiv.1306.4644,
title = {Electroweak Precision Observables, New Physics and the Nature of a 126 GeV Higgs Boson},
author = {Marco Ciuchini and Enrico Franco and Satoshi Mishima and Luca Silvestrini},
journal= {arXiv preprint arXiv:1306.4644},
year = {2015}
}
Comments
44 pages, 12 figures. v2: references added, version to appear in JHEP